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' O. P. LOGHMANN.

TIME STAMPING OR PRINTING INSTRUMENT. No. 451,767. Patented May 5,1891.

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0.-P. LOOHMANN.

TIME STAMPING 0R PRINTING INSTRUMENT. No. 451,767. Patented May 5,1891

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UNITED STATES PATENT OFFICE.

OSKAR PAUL LOCHMANN, OF GOHLIS, NEAR LEIPSIC, GERMANY.

TIME STAMPING OR PRINTING INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 451,767, dated May 5, 1891.

Application filed October 12, 1889. gerial No. 326,897. (No model.)

To aZZ whom it may concern.-

Be itknown that I, OSKAR PAUL LOOHMANN, of Gohlis, near Leipsie, in the Kingdom of Saxony, Germany,have invented certain new and useful Improvements in Time Stamping or Printing Instruments, of which the following is a clear, full, and exact specification.

The object of my invention is to provide novel means whereby the relative positions of dial-numerals and index-hands at the front side of a casing can be recorded on paper at the opposite or rear side of the casing through the medium of a series of printing-dial rings and index-hands located in the same plane and parallel to the plane of the series of indicating-dials and index-h an ds at the front of the casing.

The invention is particularly designed forv time-stamping watches or instruments, but is also applicable to registering instruments or apparatus for the purpose of making impressions which will show the relative positions of the dial-numerals and index-hands.

The object of my invention is accomplished by the features of construction and the combination or arrangement of devices hereinafter described and claimed, reference being made to the accompanying drawings, in which- Figure 1 is a front elevation of a time-stamping watch or instrument embodying my invention, the front lid or cover being omitted. Fig. 2 is a longitudinal sectional view of the same, showing the front and rear lids or covers. Fig. 3 is a plan view showing an impression made by the watch or instrument. Fig. 4: is a front elevation showing my invention embodied in a registering instrument or apparatus. Fig. 5 is a longitudinal sectional view of the same.

In order to enable those skilled in the art to make and use my invention, I will now describe the same in detail, referring first to Figs. 1 and 2 of the drawings, wherein- The numeral 1 indicates a suitable casing containing a clock-work mechanism for imparting motion to'the hour and minute hands as ordinarily practiced in time stamping or printing watches.

The casing may be provided with front and rear lids 2 and 3; but as this constitutes no essential part of the invention I do notdeem it essential to further describe the same.

The front wall of the casing is provided with an hour-dial at and a minute-dial 5, which are independent of each other and lie in the same horizontal plane. The rear wall of the casing is provided with an hour-dial printing-ring 6 and a minute printing dialring 7.

The numerals S and 9 indicate a pair of parallel shafts journaled in the casing and geared together by gear-wheels 10, 11, and 12, so that the rotary motion imparted to the shaft 9 by the clock-work mechanism, as usual, is transmitted by the said gear-wheels to the shaft 8. The front ends of the shafts S and 9, extended through the front wall of the casing, are provided, respectively, with the hour-index hand 13 and the minute index hand 1% for the purpose of indicating time in a manner similar to an ordinary watch, except that the minutes are indicated by a dial and index hand separate and independent from the hour-dial and its index-hand. The rear extremities of the shafts S and 9, extended through the rear or back wall of the casing, are provided, respectively, with hour and minute index-hands 15 and 16, which, with the dial-rings 6 and 7, are formed as types for printing impressions upon paper. The dial-rings 6 and 7 and the index-hands 15 and 16 are arranged in the same horizontal plane, so that if the lid or cover 3 be thrown open or be removed an impression can be printed which will be a facsimile of the dials 4 and 5 and index-hands 13 and 14:, thereby recording on paper the relative positions of the hour and minute hands 13 and 1% to the numerals of the dials 4t and 5.

By the peculiar arrangement described,

the independent shafts 8 and 9, extended through the front and back walls of the casing, carry index-hands at each end and are driven by the clock-work mechanism located between the front and back walls of the casin g, whereby I provide a compact instrument and am enabled to obtain impressions on paper which will show fractions of an hour. For example, if the hour-hand 13 be slightly past the figure 1 and the minute-hand be at the figure 35 the impression will indicate that itwas made at thirty-five minutes past one oclock.

The numerals or figures of the dial-rings 6 and 7 are placed in reverse order, as usual, like those of ordinary dials viewed in looking-glass.

In addition to the dial-ring 6, I may employ supplemental printing-rings 17 and 18, concentric to such dial-ring 6, for printing numbers and inscriptions, such as a firmname; but these supplemental printing-rings 17 and 18 are not indispensable, and therefore a further explanation of them is not deemed essential. If the dial-rings l7 and 18 be employed, they will be constructed to produce an impression such as is illustrated by the outermost rings 19 and 20, Fig. 3.

The construction and arrangement above described,with reference to Figs. 1 and 2,0011- stitute an efficient and useful time-printing watch or instrument having independent hour and minute dials, so that the exact minute of the hour can be recorded through the medium of the independent dial-rings 6 and 7 and index-hands and 16.

An apparatus embodying the essential features of construction and arrangement can be employed as a registering apparatus, as illustrated in Figs. 4: and 5, where the numeral 21 indicates a suitable casing having at its front wall a series of dials 22, 23, 24, and 25 for indicating tens, hundreds, thousands, to. In the casing are journaled a series of shafts 26, 27, 2S, and 29, corresponding in numher with the dials above alluded to. The several shafts are geared together by pinions and gear-wheels and 31, between the front and back walls of the casing, so that by turning the shaft 26 a turning movement will be transmitted to all of the shafts.

For the purpose of turning the shaft 26 I employalever32, journaled between the front and back walls of the casing and carrying a pawl 33, which engages a ratchet-wheel 34 on the shaft 26. The lever maybe pulled in one direction by suitable means, such as a cord 35, so that the pawl will turn the ratchet-wheel one step, and when the lever is released it will be retracted by a suitable spring 36 to place the pawl in position for a fresh engagement with the ratchet-wheel.

The rear wall of the casing is provided with a series of printing dial-rings 37, 38, 39, and 40, and index-hands exactly as described with reference to Figs. 1 and 2.

The index-hands i1, 42, 43, and 14 for the dials 22, 23, 24, and 25 are secured to one end of the shafts 26,27, 28, and 29, and the indexhands which eo-operate with the printing dialrings 3/, 08, 39, and 40 are carried by the opposite ends of the shafts, the same as in Fig. 2. By this means the relative positions of the dial-numerals and index-hands at the front side of the casing can be recorded on paper through the medium of the printing dialrings and index-hands at the rear side of the casing, in the same manner as described with reference to the construction exhibited by Figs. 1 and 2. In both constructions of apparatus the dials at the front side of the easings are in the same horizontal plane, and the printing dial-rings and index-fingers at the rear side of the casing are all arranged in one horizontal plane, which is parallel to the plane in which the front dials and indexhands are located.

By my construction and arrangement I provide a simple and compact instrument, which maybe made in the form of a watch-ease, in that the arrangement of the actuating mechanism between the front and back walls of the casing, in connection with the extension of the front and rear ends of the series of shafts through the said front and rear walls, enables me to materially reduce the size of the instrument, and thereby render it compact and simple. In this respect my invention differs from prior constructions of this character.

Having thus described my invention, what I claim is The combination of a casing having a front and back wall, a series of independent dials on the front wall, a series of independent printing dial-rings on the rear wall arranged in the same plane and parallel to the plane in which the front dials are located, a series of shafts geared together between the front and rear walls of the casing and having one end projecting through the front wall and the opposite end projecting through the back wall, the index-hands on the front ends of the shafts coacting with the front dials, the printing index-hands on the rear ends of the shafts coacting with the printing dial-rings, and mechanism, substantially as described, arranged between the said front and rear walls of the casing for turning one shaft, and thereby transmitting motion to all the shafts, substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

()SKAR PAUL LOCIIMANN. -Witnesses CARL Bonncnannnn, ERNs'r LOCHMANN.

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